Leather trimming machine



Oct. 26, 1954 A. w. SMITH 2,692,399

LEATHER TRIMMING MACHINE Filed Dec. 30, 1952 2 Sheets-Sheet l IIIIIIIIIIIIIII] INVENTOR Oct. 26, 1954 A. w. SMITH 2,692,399 I LEATHERTRIMMING MACHINE Filed Dec. 30, 1952 2 Sheets-Sheet 2 FIG. 3.

INVENTOR Patented Oct. 26, 1954 UNITED STATES PATENT OFFICE LEATHERTRIMMING MACHINE Arthur W. Smith, Little Rock, Ark.

Application December 30, 1952, Serial No. 328,705

3 Claims. -1

This invention relates to a leather trimming machine and it consists inthe combinations, constructions and arrangements of parts hereindescribed and claimed.

Generally there is provided a leather trimming machine consisting of abase atop which is affixed a vertical standard upon the upper portion ofwhich is mounted a motor having a drive shaft extending verticallyupwardly therefrom.

Upon the other side of the upper portion of the standard is a framehaving mounted therein a vertical shaft atop which is a pulley whichpulley is connected with the pulley on the drive shaft of the motor bymeans of a belt. The frame is equipped with reduction gears connectedwith the upper portion of the vertical shaft and with a drive gear atthe lower end of the shaft. The, drive gear at the lower end of theshaft connects with a bevel gear at the lower end of a driven shaft atopwhich is a circular cutting blade. Connected by means of a universaljoint is a shaft emanating from the reduction gearing to further gearingwhich drives an angularly disposed shaft at the lower end of which is afeed wheel. The feed wheel is placed immediately adjacent the cuttingknife and the apparatus is such that a shoe may be held with the planeof its sole in a vertical direction and trimmed in one operation byfeeding the same and guiding the same to the feed wheel whereupon thesole will be trimmed in a neat and workmanlike manner.

It is accordingly an object of the invention to provide an apparatus ofthe character set forth which is comparatively simple in construction,relatively inexpensive to manufacture and yet effective and efficient inuse.

Another object of the invention is to provide, in a device of thecharacter set forth, a novel angularly disposed cutting and angularlydisposed feed wheel both forming parts of the invention.

A still further object of the invention is to provide, in an apparatusof the character set forth, novel gearing forming a part of theinvention.

Other and further objects of the invention will become apparent from areading of the following specification taken in conjunction with thedrawings, in which:

Figure l is a side elevational view of an embodiment of the invention,

Figure 2 is a plan view thereof,

Figure 3 is an enlarged fragmentary side elevational view similar toFigure 1 but showing certain elements of the invention in greaterdetail, and

Figure 4 is a fragmentary sectional view taken substantially along line4-4 of Figure 3.

Referring more particularly to the drawings, there is shown therein abase It to which is affixeda vertically extending standard .II having areduced upper portion I2.

To one side of the portion I2 there is aflixed by bolts I3 or the like amotor I4 having a vertically and upwardly extending drive shaft I5provided with a pulley I6 at its upper end.

A frame generally designated at I! is affixed to the other side of theportion I2 of the standard II by an interconnecting web plate I8. Theframe I I has connected to the upper side thereof in vertically spacedrelation thereto by means of a plurality of bolts 20 or the like ahorizontally extending plate I9. Vertically extending through plate I9and the inner portion of the frame I! is a shaft 2| having a pulley 22mounted upon the upper portion thereof, which pulley is interconnectedwith the pulley I6 by means of an endless belt 23. A spacing collar 24is interposed between the pulley 22 and the plate I9.

Afiixed to the shaft 2| between the plate l9 and the upper end of theframe I! is a relatively small gear 25 which is enmeshed with arelatively larger gear 26 which likewise lies between the plate I9 andthe frame I! and which is mounted upon a stub shaft 2! extending betweenthe plate I9 and frame II. A relatively small gear 28 is likewisemounted upon the shaft 21 and is enmeshed with a relatively large gear29 mounted upon a shaft 30 which is revolubly mounted in the plate I9and frame I! and which extends downwardly to terminate in a universaljoint 3I which connects the same with'an angularly disposed shaft 32which is journaled in an inwardly and downwardly extending arm 33carried by a vertical arm 34 forming a part of the frame IT.

A gear 35 is affixed to the shaft 32 and is enmeshed with a gear 36extending through a bearing 31 formed at the free end of the arm 33. Thelower end of the shaft 38 which carries the gear 36 is provided with afeed wheel 39 having attached to the outer end thereof a guard plate 40.A block M is formed integrally upon the outer side of the lower portionof the frame I! and has angularly and upwardly disposed therein a shaft42 to the upper end of which is aflixed a circular blade 43 and to thelower end of which is affixed a bevel gear 44 which is enmeshed with agear 45 carried by the lower end of the shaft 2 I.

In operation, it will be apparent that when it is desired to trim, forexample, a sole 46 which. is attached to the welt 41 of a shoe generallydesignated at 48, it is only necessary to maintain the plane of the sole46 in a vertical condition while at the same time manipulating the shoe48 by hand so that the feed wheel 39 will maintain the same in propercontact with the knife 43 thus severing from the sole 46 the surplusportions thereof, as indicated at 49 in Figure 3. It will also beapparent that the reduction gearing 25, 26, 28, 29 will act to drive theshaft 30 and consequently the shaft 32, the gears 35 and 36 to thusrevolve the shaft 38 and the feed wheel 39 at a much slower rate and inan opposite direction to the rate of speed of the knife 43 and thedirection thereof.

While but one form of the invention has been shown and described herein,it Will be readily apparent to those skilled in the art that many minormodifications may be made without departing from the spirit of theinvention or the scope of the appended claims.

What is claimed is:

1. An apparatus of the character described comprising a base, a verticalstandard mounted on said base, a motor mounted on one side of the topportion of said standard, a frame, a web interconnecting the frame andthe opposite side of said upper portion of the standard, a drive shaftextending vertically upwardly from said motor, a pulley at the upper endof said drive shaft, a vertical driven shaft carried by said frame, apulley at the upper end of said driven shaft, a belt interconnecting thepulleys, feed wheel means carried by said frame, reduction gearingcarried by said frame and driving said feed wheel means from saidvertical driven shaft, and a rotary knife mounted on said frame anddriven by said vertical driven shaft, said knife and said feed wheelmeans being adjacent each other.

2. An apparatus as defined in claim 1 wherein said knife is angularlydisposed with respect to said feed wheel means.

3. An apparatus as defined in claim 2 wherein said feed wheel means isadapted to move at a speed relatively slower than the speed of saidknife and wherein said wheel means and said knife are driven in oppositedirections.

No references cited.

